Highly pathogenic avian influenza (HPAI) A(H5) viruses have been detected in U.S. wild aquatic birds, commercial poultry and backyard or hobbyist flocks beginning in January 2022. These are the first detections of HPAI A(H5) viruses in the U.S. since 2016. Preliminary genetic sequencing and RT-PCR testing on some virus specimens shows these viruses are HPAI A(H5N1) viruses from clade 2.3.4.4.
Last updated: May 12, 2023 | Data updated weekdays at 12pmET
Data source: USDA: 2022-2023 Confirmations of Highly Pathogenic Avian Influenza in Commercial and Backyard Flocks
Last updated: May 16, 2023 | Data updated weekly
Data source: USDA: 2022-2023 Detections of Highly Pathogenic Avian Influenza in Wild Birds
Last updated:June 12, 2023
Last updated: June 12, 2023
Species | State | Date Collected | Date Detected | Number of Affected Animals |
---|---|---|---|---|
Fisher | California | March 2023 | 6/2/23 | 1 |
Raccoon | California | May 2023 | 6/2/23 | 3 |
American Black Bear | Minnesota | May 2023 | 5/23/23 | 1 |
Fisher | California | April 2023 | 5/23/23 | 1 |
Red Fox | New York | May 2023 | 5/19/23 | 1 |
Racoon | California | May 2023 | 5/18/23 | 1 |
Mountain Lion | Utah | May 2023 | 5/17/23 | 1 |
Red Fox | New York | May 2023 | 5/16/23 | 1 |
Red Fox | Pennsylvania | April 2023 | 5/16/23 | 1 |
Red Fox | Maine | April 2023 | 5/15/23 | 1 |
Red Fox | Oregon | April 2023 | 5/15/23 | 1 |
Striped Skunk | Colorado | May 2023 | 5/11/23 | 1 |
Mountain Lion | Wyoming | April 2023 | 5/5/23 | 1 |
Mountain Lion | Nebraska | April 2023 | 5/3/23 | 1 |
Red Fox | Rhode Island | April 2023 | 5/2/23 | 1 |
Red Fox | New York | April 2023 | 4/25/23 | 3 |
Virginia Opossum | New York | April 2023 | 4/24/23 | 1 |
Striped Skunk | Montana | April 2023 | 4/20/23 | 1 |
Mountain Lion | Montana | April 2023 | 4/20/23 | 1 |
Mountain Lion | California | March 2023 | 4/14/23 | 3 |
Red Fox | Wisconsin | April 2023 | 4/13/23 | 1 |
Red Fox | New York | April 2023 | 4/11-4/13/23 | 3 |
Red Fox | Pennsylvania | April 2023 | 4/10/23 | 3 |
Striped Skunk | New Mexico | March 2023 | 4/4/2023 | 1 |
Mountain Lion | Wyoming | March 2023 | 4/4/23 | 1 |
Striped Skunk | Colorado | March 2023 | 4/4/23 | 1 |
Striped Skunk | New Mexico | February 2023 | 3/31/23 | 1 |
American Marten | Oregon | March 2023 | 3/27/23 | 1 |
Striped Skunk | Montana | March 2023 | 3/23/23 | 1 |
Mountain Lion | California | March 2023 | 3/21/23 | 2 |
Striped Skunk | Montana | February 2023 | 3/13/23 | 2 |
Striped Skunk | Kansas | February 2023 | 3/8/23 | 1 |
Racoon | Montana | February 2023 | 3/8/23 | 1 |
Mountain Lion | Wyoming | February 2023 | 3/3/23 | 1 |
Striped Skunk | Colorado | February 2023 | 3/2/23 | 1 |
Striped Skunk | New York | February 2023 | 3/2/23 | 1 |
Mountain Lion | Utah | February 2023 | 3/2/23 | 1 |
North American River Otter | Wisconsin | November 2022 | 2/28/23 | 1 |
Striped Skunk | Colorado | February 2023 | 2/28/23 | 3 |
Mountain Lion | Wyoming | February 2023 | 2/28/23 | 1 |
Mountain Lion | Wyoming | February 2023 | 2/23/23 | 1 |
Bobcat | Colorado | February 2023 | 2/23/23 | 1 |
Mountain Lion | Colorado | February 2023 | 2/23/23 | 1 |
Raccoon | Montana | February 2023 | 2/22/23 | 1 |
Striped Skunk | Kansas | January 2023 | 2/14/23 | 1 |
Bobcat | Colorado | February 2023 | 2/14/23 | 1 |
Red Fox | Colorado | Dec 2022, Jan 2023 | 2/10/23 | 2 |
Mountain Lion | Colorado | Jan 2023, Feb 2023 | 2/10/23 | 2 |
Mountain Lion | Colorado | January 2023 | 2/8/23 | 1 |
American Black Bear | Colorado | January 2023 | 2/8/23 | 1 |
American Black Bear | North Carolina | December 2022 | 2/6/23 | 1 |
Striped Skunk | Oregon | January 2023 | 2/1/23 | 2 |
Red Fox | Wyoming | January 2023 | 1/27/23 | 1 |
Bobcat | California | December 2022 | 1/24/23 | 1 |
Bobcat | Washington | January 2023 | 1/23/23 | 1 |
Red Fox | Wisconsin | January 2023 | 1/23/23 | 1 |
Red Fox | Idaho | September 2022 | 1/20/23 | 1 |
Red Fox | South Dakota | December 2022 | 1/9/23 | 1 |
Racoon | Oregon | December 2022 | 1/3/23 | 1 |
Amur Tiger | Nebraska | December 2022 | 1/3/23 | 1 |
Mountain Lion | Nebraska | December 2022 | 1/3/23 | 1 |
Grizzly Bear | Montana | December 2022 | 12/20/22 | 1 |
Striped Skunk | Montana | December 2022 | 12/20/22 | 1 |
Grizzly Bear | Nebraska | April 2022 | 12/16/22 | 1 |
Racoon | Washington | December 2022 | 12/16/22 | 1 |
Skunk | Oregon | November 2022 |
12/8/22 |
6 |
Grizzly Bear | Montana | October 2022 | 12/6/22 | 1 |
Brown (Kodiak) Bear | Alaska | November 2022 | 12/6/22 | 1 |
Red Fox | Montana | November 2022 | 12/2/22 | 1 |
Striped Skunk | Idaho | November 2022 | 11/21/22 | 3 |
Striped Skunk | Wisconsin | November 2022 | 11/21/22 | 2 |
American Black Bear | Alaska | October 2022 | 11/16/22 | 1 |
Striped Skunk | Colorado | October 2022 | 11/10/22 | 1 |
Striped Skunk | Minnesota | October 2022 | 11/3/22 | 1 |
Skunk | Montana | October 2022 | 10/28/22 | 1 |
Red Fox | New York | October 2022 | 10/27/22 | 1 |
Virginia Opossum | Illinois | October 2022 | 10/26/22 | 1 |
Red Fox | New York | September 2022 | 10/6/22 | 4 |
Amur Leopard | New York | September 2022 | 9/27/22 | 1 |
Bottlenose Dolphin | Florida | March 2022 | 8/17/22 | 1 |
Harbor Seal | Maine | July 2022 | 8/15/22 | 1 |
Skunk | Idaho | July 2022 | 8/3/22 | 1 |
Harbor Seal | Maine | July 2022 | 7/25/22 | 6 |
Red Fox | Michigan | May 2022 | 7/18/22 | 1 |
Harbor Seal | Maine | June - July 2022 | 7/11/22 | 5 |
Grey Seal | Maine | July 2022 | 7/11/22 | 1 |
Red Fox | Alaska | June 2022 | 7/7/22 | 1 |
Harbor Seal | Maine | June 2022 | 7/1/22 | 4 |
Fisher Cat | Wisconsin | April 2022 | 6/29/22 | 1 |
Red Fox | Michigan | May 2022 | 6/24/22 | 1 |
Racoon | Michigan | June 2022 | 6/24/22 | 1 |
Striped Skunk | Idaho | June 2022 | 6/22/22 | 3 |
Coyote | Michigan | May 2022 | 6/17/22 | 1 |
Red Fox | Michigan | May - June 2022 | 6/17/22 | 3 |
Racoon | Washington | June 2022 | 6/14/22 | 4 |
Red Fox | Michigan | May 2022 | 6/9/22 | 4 |
Red Fox | North Dakota | May 2022 | 6/8/22 | 1 |
Red Fox | Utah | May 2022 | 6/8/22 | 1 |
Red Fox | Michigan | May 2022 | 6/7/22 | 1 |
Red Fox | Minnesota | May 2022 | 6/3/22 | 1 |
Red Fox | North Dakota | May 2022 | 6/2/22 | 1 |
Virginia Opossum | Iowa | May 2022 | 5/31/22 | 2 |
Red Fox | Minnesota | May 2022 | 5/27/22 | 2 |
Red Fox | New York | May 2022 | 5/27/22 | 1 |
Red Fox | Alaska | May 2022 | 5/25/22 | 1 |
Bobcat | Wisconsin | April - May 2022 | 5/24/22 | 2 |
Red Fox | New York | May 2022 | 5/19/22 | 1 |
Red Fox | Iowa | May 2022 | 5/18/22 | 1 |
Red Fox | New York | April 2022 | 5/16/22 | 5 |
Red Fox | Wisconsin | April - May 2022 | 5/13/22 | 7 |
Red Fox | Minnesota | May 2022 | 5/12/22 | 4 |
Red Fox | Michigan | April 2022 | 5/11/22 | 4 |
Red Fox | Iowa | May 2022 | 5/11/22 | 1 |
Red Fox | Minnesota | April 2022 | 5/10/22 | 1 |
Red Fox | Wisconsin | April - May 2022 | 5/6/22 | 5 |
Data source: USDA Animal and Plant Health Inspection Service (APHIS)
Species | Total Affected Animals Detected | States Impacted |
---|---|---|
American Black Bear | 4 | 4 |
American Marten | 1 | 1 |
Amur Leopard | 1 | 1 |
Amur Tiger | 1 | 1 |
Bobcat | 6 | 4 |
Bottlenose Dolphin | 1 | 1 |
Brown (Kodiak) Bear | 1 | 1 |
Coyote | 1 | 1 |
Fisher Cat | 3 | 2 |
Grey Seal | 1 | 1 |
Grizzly Bear | 3 | 2 |
Harbor Seal | 16 | 1 |
Mountain Lion | 20 | 6 |
North American River Otter | 1 | 1 |
Raccoon | 14 | 5 |
Red Fox | 81 | 15 |
Skunk | 6 | 3 |
Striped Skunk | 30 | 10 |
Virginia Opossum | 4 | 3 |
State | Number of Species Affected | Total Affected Animals |
---|---|---|
Alaska |
3 | 5 |
California | 4 | 13 |
Colorado | 5 | 19 |
Florida | 1 | 1 |
Idaho | 3 | 8 |
Illinois | 1 | 1 |
Iowa | 2 | 4 |
Kansas | 1 | 2 |
Maine | 3 | 18 |
Michigan | 3 | 16 |
Minnesota | 2 | 9 |
Montana | 6 | 13 |
Nebraska | 3 | 4 |
New Mexico | 1 | 2 |
New York | 4 | 24 |
North Carolina | 1 | 1 |
North Dakota | 1 | 2 |
Oregon | 5 | 9 |
Pennsylvania | 1 | 4 |
Rhode Island | 1 | 1 |
South Dakota | 1 | 1 |
Texas | 1 | 1 |
Utah | 2 | 3 |
Washington | 2 | 7 |
Wisconsin | 5 | 20 |
Wyoming | 2 | 6 |
Month/Year* | Number of Detections |
---|---|
May 2022 | 37 |
June 2022 | 23 |
July 2022 | 19 |
August 2022 | 3 |
September 2022 | 1 |
October 2022 | 7 |
November 2022 | 8 |
December 2022 | 13 |
January 2023 | 9 |
February 2023 | 20 |
March 2023 | 17 |
April 2023 | 21 |
May 2023 | 15 |
June 2023 | 4 |
*Note: Dates are when H5N1 was detected, not necessarily when the sample was collected (in some cases there have been months between collection and detection).